Heavy metal pollution and ecological risk assessment of water-based drill cuttings produced in shale gas exploitation in Chongqing, China

被引：12

作者：

Xu, Tengtun ^{[1
,2
]}

Wang, Li'ao ^{[1
,2
]}

Li, Tong ^{[1
,2
]}

Zhan, Xinyuan ^{[1
,2
]}

机构：

[1] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Dept Resources & Environm Sci, Chongqing 400044, Peoples R China

来源：

THIRD INTERNATIONAL CONFERENCE ON ENERGY ENGINEERING AND ENVIRONMENTAL PROTECTION | 2019年 / 227卷

关键词：

HEALTH-RISK; TRACE-METALS;

D O I：

10.1088/1755-1315/227/6/062005

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Shale gas exploitation is booming in China. Unlike the traditional oil extraction industry, shale gas extraction will generate more solid waste. Water-based drill cuttings (WBDC) as one of them is currently under regulatory vacuum. This article studied the status of heavy metal pollution and evaluated the ecological risk of WBDC. Cd, Cr, Cu, Hg, Mn, Ni, Pb and Zn were selected for the study. The results showed that except for Ni, other heavy metals showed different degrees of pollution, but the leaching toxicity was rather limited. Meanwhile, the ecological risks of all samples were significant, which posed a huge threat to environment. Though its limitation, this article can provide theoretical foundation for regulatory decisions of WBDC.

引用

页数：6

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